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1166 条记录 (耗时 0.019 秒)

    RAM AND SHORT-CIRCUIT DETECTION SYSTEM
    33.
    发明公开
    RAM AND SHORT-CIRCUIT DETECTION SYSTEM 审中-公开

    公开(公告)号：US20240120017A1

    公开(公告)日：2024-04-11

    申请号：US18474518

    申请日：2023-09-26

    申请人： ROHM Co., LTD.

    发明人： Kosuke Ijigawa ,  Kazuhisa Ukai

    IPC分类号： G11C29/50 ,  G01R31/52 ,  G11C7/12

    CPC分类号： G11C29/50008 ,  G01R31/52 ,  G11C7/12

    摘要： Provided is a RAM including a first read bit line, a first write bit line, a second read bit line, a second write bit line, a charge circuit configured to charge one of the first and second read bit lines and the first and second write bit lines at a time of short-circuit detection, and a discharge circuit configured to discharge the other of the first and second read bit lines and the first and second write bit lines at the time of the short-circuit detection.

    Arc fault detector
    36.
    发明授权
    Arc fault detector 有权

    公开(公告)号：US11942774B2

    公开(公告)日：2024-03-26

    申请号：US17604773

    申请日：2020-04-23

    申请人： Eaton Intelligent Power Limited

    发明人： Werner Dichler ,  Guenter Martinek

    IPC分类号： G01R31/52 ,  G01R31/14 ,  H02H1/00

    CPC分类号： H02H1/0015 ,  G01R31/14 ,  G01R31/52

    摘要： An arc fault detector includes slew-rate-detection, envelope-step-detection, and first and second controller units. The slew-rate-detection-unit determines a slew rate of the electric current in the first electric line, comparing the slew rate with a threshold, and outputting a slew-rate-detection-signal on a second output when the determined slew rate is higher than the threshold. The envelope-step-detection-unit determines change of an envelope-value of a predefined frequency band of the broadband measurement signal within a predefined timespan, and outputs an envelope-step-detection-signal on a third output when the change is higher than a threshold change. The first controller-unit, connected to second and third outputs, outputs a second arc-detection-signal on a fourth output when it receives slew-rate and frequency-detection signals within a first detection-window. The second controller-unit, connected to first and fourth outputs, outputs a trigger signal when it receives first and second arc-detection-signals for at least a defined total time within a second detection-window.

    LEAKAGE CURRENT DETECTION AND INTERRUPTION DEVICE, ELECTRICAL CONNECTOR AND ELECTRICAL APPLIANCE
    37.
    发明公开
    LEAKAGE CURRENT DETECTION AND INTERRUPTION DEVICE, ELECTRICAL CONNECTOR AND ELECTRICAL APPLIANCE 审中-公开

    公开(公告)号：US20240097426A1

    公开(公告)日：2024-03-21

    申请号：US17934552

    申请日：2022-09-22

    申请人： Chengli Li

    发明人： Long CHEN ,  Chengli LI ,  Guolan YUE

    IPC分类号： H02H3/05 ,  G01R31/52 ,  H01H47/00 ,  H01H47/32 ,  H01H71/24 ,  H02H3/08

    CPC分类号： H02H3/05 ,  G01R31/52 ,  H01H47/002 ,  H01H47/32 ,  H01H71/24 ,  H02H3/08 ,  H01R13/713

    摘要： A leakage current detection and interruption device includes a switch module configured to control electrical connection between input and output ends of power supply lines; a leakage current detection module configured to generate a leakage fault signal in response to a leakage current in the power supply lines; a leakage-responsive drive module configured to drive the switch module to disconnect the electrical connection in response to the leakage fault signal; a fault-responsive drive module configured to drive the switch module to disconnect the electrical connection in response to a fault in the leakage-responsive drive module; and a self-test module configured to generate a self-test signal and to generate a self-test fault signal in response to a fault in the leakage current detection module and/or the leakage-responsive drive module. By providing the fault-responsive drive module, the device can automatically disconnect the electrical power when the leakage-responsive drive module has a fault.

    SWITCH SHORT-CIRCUITED DIAGNOSIS METHOD
    38.
    发明公开
    SWITCH SHORT-CIRCUITED DIAGNOSIS METHOD 审中-公开

    公开(公告)号：US20240069090A1

    公开(公告)日：2024-02-29

    申请号：US18151701

    申请日：2023-01-09

    申请人： DELTA ELECTRONICS, INC.

    发明人： Kai-Wei HU ,  Ping-Heng WU ,  Lei-Chung HSING

    IPC分类号： G01R31/26 ,  G01R31/52 ,  H02M5/458

    CPC分类号： G01R31/2617 ,  G01R31/52 ,  H02M5/458

    摘要： A switch short-circuited diagnosis method includes steps of: determining an initial voltage interval of multiple voltage intervals according to voltage relationships between voltages of a first phase wire, a second phase wire, and a third phase wire; performing a switch short-circuited diagnosis of a first bidirectional switch module in the three consecutive voltage intervals from the initial voltage interval, and including steps of: turning on a first switch branch, a second switch branch, or a third switch branch of the first bidirectional switch module according to the voltage relationships between the voltages of the first, second and third phase wires, determining whether an overcurrent occurs to diagnose whether the first switch branch, the second switch branch, or the third switch branch of the first bidirectional switch module is in a short-circuited state, and performing the switch short-circuited diagnosis for the next voltage interval.

    Earth leakage detecting device, and vehicular power supply system
    39.
    发明授权
    Earth leakage detecting device, and vehicular power supply system 有权

    公开(公告)号：US11906599B2

    公开(公告)日：2024-02-20

    申请号：US17621185

    申请日：2020-06-15

    申请人： SANYO Electric Co., Ltd.

    发明人： Masato Nakayama ,  Tomonori Kunimitsu ,  Taisuke Hamada ,  Jun Asakura

    IPC分类号： G01R31/52 ,  G01R31/00 ,  B60L3/00 ,  B60L3/12 ,  H02H3/17

    CPC分类号： G01R31/52 ,  B60L3/0046 ,  B60L3/0069 ,  B60L3/12 ,  G01R31/006 ,  H02H3/17

    摘要： An earth leakage detecting device comprises following elements. A first end of coupling capacitor is connected to a current path of power storage connected to load in a state of being insulated from a ground. Voltage output unit generates a periodic voltage that changes periodically, and applies the periodic voltage to a second end of coupling capacitor via impedance element. Voltage measurer measures a voltage at a connection point between coupling capacitor and impedance element. Earth leakage determiner determines presence or absence of an earth leakage between the current path of power storage and the ground on the basis of the measured voltage. Voltage output unit has a preparation period for constantly outputting a potential between a high-side potential and a low-side potential of the periodic voltage before a measurement period for outputting the periodic voltage.